From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 8 Aug 1999 23:26:21 -0400 From: Daniel Jacobowitz To: mlan@cpu.lu Cc: hedrick@Astro.Dyer.Vanderbilt.Edu, mj@ucw.cz, Paul.Mackerras@cs.anu.edu.au, linuxppc-dev@lists.linuxppc.org Subject: Re: Trying a Promise Ultra/66 on powerpc Message-ID: <19990808232621.B352@them.org> References: <199908081954.VAA02923@piglet.cpu.lu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <199908081954.VAA02923@piglet.cpu.lu>; from Michel Lanners on Sun, Aug 08, 1999 at 09:54:12PM +0200 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Sun, Aug 08, 1999 at 09:54:12PM +0200, Michel Lanners wrote: > Problems start with the changed definition of a few ide functions, now > using hw_regs_t, in asm-ppc/ide.h. As a result, > arch/ppc/kernel/pmac_setup.c and chrp_pci.c need to include linux/ide.h > instead of asm/ide.h. In addition, pmac_setup.c > defines an empty ide_init_default_hwifs(), but it was previously > defined in asm-ppc/ide.h. Patch (linux-asm-ide.patch) below. Check. > Then, I had the problem of enabling the PCI IO space of the card; I > have tried a more generic patch which I'll send in a different mail > with other PCI-related stuff (IRQ related). Great. I hacked around this in Promise. > What annoyed me the most, was getting access to the I/O-ports of the > Promise going. Turns out that the PCI config registers contain the IO > address as seen from the bus, which is not the same as seen from the > CPU. In fact, they start at 0x0 on the PCI bus, but the host bridge > maps that area to 0xf2000000 on the processor bus. > > This fact was already catered for with the definition of outb/inb and > friends, which get an offset added to the port. Unfortunately, the > PowerMac IDE code undoes this and replaces it with a different > mechanism, which in essence removes the offset. Grrr.. > > I've solved the problem by adding the right offset directly to the > io-port values as found in the kernel's PCI structures. I think this > needs more serious rework, though. Paul, are you the author of the > PowerMac IDE stuff? So we can work this out... This didn't, oddly, stop my card from working. It does, however, make me lock up hard if I hdparm -i /dev/hda. Oh, if you didn't pick this up, you can make it ide0/1 instead of ide2/3 by enable CONFIG_BLK_DEV_OFFBOARD. > >> > /dev/hdc: > >> > Timing buffered disk reads: 32 MB in 5.83 seconds = 5.49 MB/sec > ;-)) How about this: > > /dev/hde: > Timing buffered disk reads: 64 MB in 6.60 seconds = 9.70 MB/sec > Maxtor 91024D4; 10G 7200 RPM, UDMA-2 ie 33 MB/s. Eek. I want that :) Dan /--------------------------------\ /--------------------------------\ | Daniel Jacobowitz |__| SCS Class of 2002 | | Debian GNU/Linux Developer __ Carnegie Mellon University | | dan@debian.org | | dmj+@andrew.cmu.edu | \--------------------------------/ \--------------------------------/ [[ This message was sent via the linuxppc-dev mailing list. Replies are ]] [[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]] [[ reply is of general interest. Please check http://lists.linuxppc.org/ ]] [[ and http://www.linuxppc.org/ for useful information before posting. ]]